2 * (C) Copyright 2004 Atmark Techno, Inc.
4 * Yasushi SHOJI <yashi@atmark-techno.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #ifndef __ASM_GBL_DATA_H
26 #define __ASM_GBL_DATA_H
28 /* Architecture-specific global data */
29 struct arch_global_data {
33 * The following data structure is placed in some memory wich is
34 * available very early after boot (like DPRAM on MPC8xx/MPC82xx, or
35 * some locked parts of the data cache) to allow for a minimum set of
36 * global variables during system initialization (until we have set
37 * up the memory controller so that we can use RAM).
40 typedef struct global_data {
43 unsigned int baudrate;
44 unsigned long have_console; /* serial_init() was called */
45 #ifdef CONFIG_PRE_CONSOLE_BUFFER
46 unsigned long precon_buf_idx; /* Pre-Console buffer index */
48 unsigned long env_addr; /* Address of Environment struct */
49 const void *fdt_blob; /* Our device tree, NULL if none */
50 unsigned long env_valid; /* Checksum of Environment valid? */
51 unsigned long fb_base; /* base address of frame buffer */
52 void **jt; /* jump table */
53 char env_buf[32]; /* buffer for getenv() before reloc. */
54 struct arch_global_data arch; /* architecture-specific data */
57 #include <asm-generic/global_data_flags.h>
59 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r31")
61 #endif /* __ASM_GBL_DATA_H */